1996 Honda Civic

Engine Mechanical problem
1996 Honda Civic 4 cyl Front Wheel Drive Manual 300000 miles

a friend replaced the engine of his 1999 civic after blowing his old engine. Instead of throwing away, I offered to buy it for a very small amount thinking I could get some undamaged and useful parts. I disassembled the engine and found the only obvious damage was the no.3 crankshaft bearing and the shaft. The rest looks ok except a little grinding of the valves and seats. Im not sure about the piston rings if its a good idea to use it on my car when its my time to make an overhaul.I was told the old engine was doing 125mph when it blew, so I guess compression was still good, I need some advice and info about the clearance of piston rings.. Tnx.
August 6, 2010.

End Gap

Top Ring
Standard0.006-0.012 (0.15-0.30)
Service Limit0.024 (0.61)

Second Ring
Standard0.012-0.018 (0.30-0.45)
Service Limit0.028 (0.71)

Oil Ring
Standard0.008-0.028 (0.20-0.71)
Service Limit0.031 (0.79)

Ring-To-Groove Clearance
Top Ring
Standard0.0014-0.0024 (0.035-0.061)
Service Limit0.0051 (0.130)

Second Ring
Standard0.0012-0.0022 (0.030-0.056)
Service Limit0.0051 (0.130)

(1)Measure piston diameter 0.20" (5 mm) from bottom of piston skirt.

Aug 6, 2010.